Apparatus for heating and deoxidizing water.



F. N. SPELLER.

APPARATUS FOR HEATING AND DEOXIDIZING WATER.

' APPLICATION FILED APR.29. I918. 1,274,099.

Patented July 30, 1918.

INVENTOH F/VS d/er A TTORNEY UNITED STATES \PATENT. our-Ion.

FRANK SPELLER, OF PITTSBURGH, PENNSYLVANIA.

APPARATUS FOR HEATING AND DEOXIDIZING WATI IR.

Specification of Letters Patent. Patented July 30, 1918.

Application filed April 29, 1918. Serial No. 231,428.

To all whom it may concern:

Be it known that I, FRANK N. SPELLER, a citizen of the United States,and resident of Pittsburgh, in the county of Allegheny and State ofPennsylvania, have invented certain new and useful Improvements inApparatus for Heating and Deoxidizing Water, of which the following is aspecification.

The present invention relates to apparatus for use in removing the freeoxygen and cleansed of any rust or scale before entering the housepiping.

A still further object is the provision of apparatus having the novelfeatures of construction shown and described and particularly pointedout in the sub-joined claims.

Referring to the drawing forming part of the specification; I

Figure 1 is a longitudinal sectional view of the apparatus with partsshown in side elevation;

Fig. 2 is a fragmentary plan view of one of the deoxidizing platesandFig. 3 is a cross section thereof.

frame consisting of longitudinally extending bars 13, transverse bars14.- and uprights 15. Within the tank 12 are placed a plurality ofsuperposed expanded sheet steel or iron plates 16 which may haveapertures 17 formed therein which are surrounded by projecting ribs 18as shown in Figs, 2 and 3,

By forming the sheet metal plates in this manner, a multiplicity ofchambers are formedbetween the various plates thereby providing a largearea of metallic surface over which the water'passing through thedeoxidizer will come in contact. The apertures 17 furthermore permit offree passage of the water from one chamber to another. Theskeleton frameformedby the bars 13,

'14 and 15 serves to support the deoxidizing plates which are locatedabove the heating coils 4. In the preferred embodiment of the invention,I propose to use a filter indicated generally by the numeral 20, whichcomprises a cylindrical casing 21 divided into two chambers 22 and 23 bya reticulated diaphram 24. Any suitable filteringv medium such as sandor sand and gravel is contained in chamber 22 and the chamber 23 forms'aheader through which the filtered water may freelypass. A circulatingcoil 25 is mounted within the chamber 22 of the filter and connectedwith the deoxidizing tank 12 in a manner to be presently described.

Aset of auxiliary heating coils 26 are' shown in Fig-1 which may beutilized instead of the circulating coil 25. In opera- 1 tion cold waterflows through the pipe v27 and the normally open control valve 28 intothe combined deoxidizing heating and stor age tank 12, through which itslowly flows and is heated by the coils 4. During its passage throughthe tank, the plates 16 act upon the water which risesup and removespractically all of the free oxygen from the water, thereby preventingthe corrosion and destruction of the piping throughout the hot waterpipeline. The heated water passes out at the top oft-he tank throughpipes 29 and 30 and part of it is shunted through the pipe 31 to thecirculating coil 25 thence I by a pipe 32 through the normally openvalve 33 and by a pipe 34 into the bottom of'the tank as indicated bythe arrows. The comparatively hot water taking this course induces aconstantthermo-siphon circulation through the tank 12. Under normalconditions the valve 35 in the pipe 30 is open and the valve 36 isclosed and this will permit the normal circulation of water from thetank'12 through'pipes 29 and 30 and valve 35 into the top of the filterby way of pipe 37'. The water permeates through the filter ing medium inthe chamber22 and into the header 23. and thence flows up through themeans of the coil 25 above described, or an auxiliary heater 26 may beprovided for this purpose and to facilitate circulation, and circulationmay be further accelerated by a centrifugal pump 42 when necessary. Ineither event the water is returned to the header 23 of the filter by wayof pipes 43 and 44.

'When it is desired to use the auxiliary heater 26, a Valve 43 locatedin the return line 43 is closed and the inlet and outlet valves 26 and26 which connect the auxiliary heater with the return line 43 are openedand the water will take the course indicated by the arrows. By closingthe valves 26 and 26 and opening the valve 43 it is obvious that theauxiliary heater will be rendered inoperative. When the auxiliary heater26 is used, it is unnecessary to provide the circulating coil 25.

If, for any reason, itmay not be desired to filter the water which hasbeen deoxidized it will be clear that by opening the valve 36, the watermay flow directly to the pipe 40 and out through the system and back tothe tank 12 by Way of an auxiliary return pipe 44 which may be providedfor the purpose andwhich includes a control valve 45. A' pipe 46including a normally closed valve 47 is connected with the sewer so thatthe heating tank may be occasionally flushed out to discharge anyaccumulation of iron oxids or' other scale which may accumulate withinthe tank. A pipe 48 provided with' a valve -49 is also provided forcleaning out the circu-' lating coil 25. 1

From the foregoing it will be seen that the present invention is asimplification and improvement over the apparatus disclosed in my PatentNo; 1,204,602, above referred to. i It" saves considerable expense inbuilding -a plant of this description to combine the heating anddeoxidizing elements in one structure. In building the apparatus in thisway the storage tank which is utilized" also for the heater anddeoxidizing tank only needs to be made a trifle larger than would'otherwisebe necessary. The heating coils occupy comparatively a smallamount of space and the thin sheet metal plates, (which in. the drawingsare shown of an exaggerated thickness), displace a very small quantityof water and therefore the storage capacity 'of the. tank is notmaterially reduced by their presence. I

Though I have described with great particularity of detail certainembodiments of my invention, yet it is' not to be understood therefromthat the invention is restricted to -'the embodiments described. Variousmodifications thereof in detailand in the arthose skilled in the artwithout departure o from the invention as defined in the followingclaims.

Deoxidizing, as used in this specification, refers to the removal of thefree or dissolved oxygen normally present in water, this freeoxygenbeing the most active agent in promoting corrosion and waterbecoming inactive by the removal of its free oxygen.

What I claim is 1- 1. A water heater including a heating unit and aplurality of thin sheet steel or iron plates for deoxidizing the wateras it passes throughthe heater.

2. A water heater comprising a heating unit, a plurality ofthinisheetisteel oroiron plates and a tank inclosing said heating unitandplates in which the water is heated, deoxidized and stored.

3. A water heater comprising a heating unit, a plurality of superposedexpanded sheet iron or steel plates, forming a multip-licity of passagesand exposing a great area of metallic surface to act on the waterpassing through the tank and a single tankinclosing said heating unitand sheet metal plates.

4. A plant for'heating, deoxidizing and filtering water including in'combination a tank enclosinga heating unit and a plurality of thin sheetsteel or iron plates and a filter communicating with said tank. k

5. A plant for heating, deoxidizing and filtering water including incombination a tank-inclosing a heating unit and a plurality v of thinsheet steel or iron plates, a filter, an

outlet pipe from said tank connected to the filter, a pipe coil withinsaid filter connected at one end to said outlet pipe and at the otherend to said tank to induce a circular;-

tion through the tank and pipe coil, outlet piping from said" filter andreturn piping to said filter.

6. A plant for heating, deoxidizing and filtering water v including incombination a tank inclosing a heating unit and a plurality ofsuperposed expanded sheet steel or iron plates forming a multiplicity ofpassages and exposinga great area of metal surface to act on the waterpassing through the tank, a filter and piping connectingthe filter andtank for maintaining an independent circu-. lation therebetween. y

[7. A plant for heating, deoxidizing and filtering water including incombination a tank inclosing a heating unit and a plurality ofsuperposed expanded sheet steel or iron plates forming a multiplicity ofpassages and exposing a great area of metal surface to act on the waterpassing through the tank, a; filter and an auxiliary heater tomaintaincirculation and the temperature of the filter Evhenhot water isnot beingdrawn thererem.

8. Aplant for heating, deoxidizing and' a return pipe leading to saidfilter, an auxfiltering water including in combination a iliary heaterconnected to said. return pipe tank inclosing-a heating unit and alurality valves for controlling the -circulation of of superposedexpanded sheet stee or iron' water' between said return pipe and said 5plates forming a multiplicity of passages auxiliary heater and acirculating pump 15 and exposing a great area of metal surface connectedto said return pipe. to act on the water passing through the tank, Inwitness whereof I have hereunto signed a filter, piping connecting thefilter and tank my name. for maintaining an independent circulation 10therebetween, outlet piping from said filter, FRANK SPELLER.

